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Finding the Fourth Proportional to 8,987.36, 13,472.32 and 4,606.88

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Solution

The fourth proportional to 8,987.36, 13,472.32 and 4,606.88 is: 6,905.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.36 : 13,472.32 = 4,606.88 : x
  2. Step 2: Convert to fraction form
    8,987.36/13,472.32 = 4,606.88/x
  3. Step 3: Cross multiply
    8,987.36x = 13,472.32 × 4,606.88
  4. Step 4: Simplify right side
    8,987.36x = 62,065,361.56
  5. Step 5: Solve for x
    x = 62,065,361.56/8,987.36
  6. Step 6: Final answer
    x = 6,905.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.